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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | -1 |
| 4 | 2 |
| 5 | 6 |
| 6 | -1 |
| 7 | 2 |
| 8 | 8 |
| 9 | -1 |
| 10 | 4 |
| 11 | 2 |
| 12 | -1 |
| 13 | 6 |
| 14 | 2 |
| 15 | -1 |
| 16 | 10 |
| 17 | 4 |
| 18 | -1 |
| 19 | 20 |
| 20 | 2 |
| 21 | -1 |
| 22 | 4 |
| 23 | 44 |
| 24 | -1 |
| 25 | 4 |
| 26 | 56 |
| 27 | -1 |
| 28 | 8 |
| 29 | 22 |
| 30 | -1 |
| 31 | 12 |
| 32 | 16 |
| 33 | -1 |
| 34 | 10 |
| 35 | 2 |
| 36 | -1 |
| 37 | 34 |
| 38 | 8 |
| 39 | -1 |
| 40 | 8 |
| 41 | 16 |
| 42 | -1 |
| 43 | 26 |
| 44 | 10 |
| 45 | -1 |
| 46 | 10 |
| 47 | 14 |
| 48 | -1 |
| 49 | 60 |
| 50 | 4 |
| 51 | -1 |
| 52 | 14 |
| 53 | 28 |
| 54 | -1 |
| 55 | 32 |
| 56 | 16 |
| 57 | -1 |
| 58 | 8 |
| 59 | 20 |
| 60 | -1 |
| 61 | 66 |
| 62 | 44 |
| 63 | -1 |
| 64 | 74 |
| 65 | 12 |
| 66 | -1 |
| 67 | 110 |
| 68 | 40 |
| 69 | -1 |
| 70 | 48 |
| 71 | 6 |
| 72 | -1 |
| 73 | 10 |
| 74 | 4 |
| 75 | -1 |
| 76 | 32 |
| 77 | 34 |
| 78 | -1 |
| 79 | 62 |
[1,1,2,-1,2,6,-1,2,8,-1,4,2,-1,6,2,-1,10,4,-1,20, 2,-1,4,44,-1,4,56,-1,8,22,-1,12,16,-1,10,2,-1,34, 8,-1,8,16,-1,26,10,-1,10,14,-1,60,4,-1,14,28,-1, 32,16,-1,8,20,-1,66,44,-1,74,12,-1,110,40,-1,48,6, -1,10,4,-1,32,34,-1,62] |